This variant lets you easily play with any number of boards boards from any expansion (including just one) or to randomize the pairing of the boards within an expansion.
You don't have to play with boards paired in the way the game pairs them. You use tokens to pair the boards. This basically unhooks the pairing that comes with the game, randomly re-hooks the board to another board that is being used in your game, and allows you to still twist the newly paired boards.
There are really two variants. One that keeps the original twisting direction from the board, meaning that the paired boards might both twist in the same direction. The other has arrows on the tokens that pair the boards so that they twist in opposite directions like the standard system in Dungeon Twister.